kyleescott6148 kyleescott6148
  • 02-01-2018
  • Mathematics
contestada

What is sn for the arithmetic series with a1=3 an=-38 and n=8?

Respuesta :

anchitthawi
anchitthawi anchitthawi
  • 02-01-2018
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140
Answer Link

Otras preguntas

The slope formula can be used to prove a quadrilateral has a. congruent sides b. proportional angles c. parallel sides d. congruent angles
You use a line best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.015. How confident ca
Find a piece of music that has multiple changes in dynamics, tempo, and/or articulation and share that music (name the piece and artist) with your classmates. D
1 what is a material that contains three elements joined in a fixed proportion? a mixture b solution c atom d compound
How did shoemaking change during the gilded age?
A triangle has base 7m and area 17.5m^2 what is the height
you want to study the growth of a plant what types of qualitative and quantitative data
How do you simplify the ratio 30mL:45mL
whos the richeist family
is the GCF of two even numbers 2